Interchange Sequence Signs

Interchange Sequence signs (see Figure 3‑4 for example) are used instead of Advance Guide signs where the spacing between interchanges is less than 800 feet.
Interchange Sequence sign. (click in image to see full-size image)
Figure 3-4. Interchange Sequence sign.
Interchange Sequence signs are addressed in Section 2E.37 of the Texas MUTCD. For design and layout of Interchange Sequence signs, see
Chapter 4, Freeway Guide Sign Design
of this manual.
Application and Placement.
 Interchange Sequence signs should not be used on a single-interchange basis. When used, Interchange Sequence signs should be used over the entire length of a route.
TxDOT uses Interchange Sequence signs in urban areas with populations of 100,000 or greater.
Design.
 Minimum letter height requirements (as shown in Table 2E-2.1 of the Texas MUTCD) are as follows:
  • Interchange name: 13.3 inches for uppercase.
  • Numeral: 13.3 inches.
Distances shown on Interchange Sequence signs should be shown as fractions and rounded to the nearest ¼ mile.
Chapter 9, Section 2, of the
Signs and Markings Volume
 of the
Traffic Operations Manual
 provides the following additional guidance concerning the design and layout of Interchange Sequence signs:
  • An Interchange Sequence sign should not include more than three exits.
  • An Interchange Sequence sign must not include destinations, city names, memorial highway names, periods, arrows, or EXIT ONLY messages.